Home / 13,839.74-19,098.78-7,871.36

Finding the Fourth Proportional to 13,839.74, 19,098.78 and 7,871.36

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Solution

The fourth proportional to 13,839.74, 19,098.78 and 7,871.36 is: 10,862.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.74 : 19,098.78 = 7,871.36 : x
  2. Step 2: Convert to fraction form
    13,839.74/19,098.78 = 7,871.36/x
  3. Step 3: Cross multiply
    13,839.74x = 19,098.78 × 7,871.36
  4. Step 4: Simplify right side
    13,839.74x = 150,333,372.94
  5. Step 5: Solve for x
    x = 150,333,372.94/13,839.74
  6. Step 6: Final answer
    x = 10,862.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.